5.1 In the event that the Buyer fails to make payment of the Trance I Payment and Trance II Payment as stated in Clause 2.3 b., and fail to remedy such breach of payment within 15 days from the date of receipt of the default notice form the Sellers, the Sellers shall be entitled to terminate this Agreement immediately by written termination notice and forfeit any payment duly paid by the Buyer to the Sellers under this Agreement prior to the termination as a full an final settlement of claim and damages.